Table 3.
Patients characteristics of thromboembolic risk factors of the USA study
| Risk factors | N = 1006 | |
|---|---|---|
| Family history of thromboembolic illness, n (%) | Yes | 12 (1.2%) |
| No | 993 (98.8%) | |
| Missing | 1 | |
| Evidence of predisposing conditions for a vascular or metabolic disease, n (%) | Yes | 5 (0.5%) |
| No | 1001 (99.5%) | |
| Current smoker older than 35 years or non-smoker over 40 years old, n (%) | Yes | 51 (5.1%) |
| No | 955 (94.9%) | |
| BMI > 30 kg/m2,n (%) | Yes | 353 (35.1%) |
| No | 653 (64.9%) | |
| Number of VTE risk factors, n (%) | 0 | 611 (60.8%) |
| 1 | 367 (36.5%) | |
| 2 | 27 (2.7%) | |
| ≥3 | 0 | |
| Missing | 1 |